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Old 10-28-11, 07:14 PM   #17
creeky
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great chart AC. They don't chart education which I would suggest might change the results for industrial and service output forecasts. ever the optimist.

@d3vi1d06
To go back to your original post. Why go to an all DC household? Why not have a separate part of the house DC. Low voltage DC is perfect for LED lighting. Yet AC offers all the benefits of mass produced highly efficient appliances, esp. fridges.
How do you control DC though. I can't help you there. You mentioned rectifiers. Anybody? It's a question I share. Can you run a 3volt/.5 amp device on a 12 volt/1200 amp battery or do you have to damp it down and how?
** btw. you've been in the house for a bit, what is your daily electric consumption? I can't believe it would be 45kwh.
** S-F Batteries aren't that expensive. A modest 1kw system can run on 6 L16 batteries and that, I would think, would power a households' lights and tv/internet/computers. Maybe even an AC fridge off an inverter. You might want to double it and run your heat and (if nec.) well pumps. That's $5 to 7K diy?
DC to AC inverters are up to 97% efficient now. If you have 3.6 kw daily input off a 1kw system and you lose 100 watts it's not a big deal.
** Ryland:that just made me laugh. Hands across the waters.
Also, old news? AC current alternates. So apparently there's a 1/10 millionth of a second pause between alternations. And, I've heard, the human brain sends muscle response signals at 1/100 millionths of a second. Hence, you can pull your contact (ie. drop the live wire) by sending a signal to your muscle and with AC, message received. DC just overwhelms the signal paths and you can't let go. With sufficient amperage the last thought you will have will be, "oh, so that's what my eyeballs boiling in my skull smells like."
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